From patchwork Wed Mar 10 22:53:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maximilian Luz X-Patchwork-Id: 12129741 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B6E9C4332D for ; Wed, 10 Mar 2021 22:54:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1616C64FDE for ; Wed, 10 Mar 2021 22:54:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232966AbhCJWyV (ORCPT ); Wed, 10 Mar 2021 17:54:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232859AbhCJWxu (ORCPT ); Wed, 10 Mar 2021 17:53:50 -0500 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22E4BC061574; Wed, 10 Mar 2021 14:53:49 -0800 (PST) Received: by mail-ej1-x633.google.com with SMTP id hs11so42159731ejc.1; Wed, 10 Mar 2021 14:53:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=OawhDM8ZpV0RjPs6QqjlTWNfo7z6flHF8PYYLIyQhBU=; b=ESe3vrbzB/UATj9ZSi4SVtJXCrxBT2El4u51f+/a8jwg3003uoE/GvE314CsC/n/Bk Qw3pzPdiYEofaqzAGjH1BWBwp/rckWHb27ZGGdIetB3hcLTD/MmgsBIYHURgkTdrvHuJ 05TUcuJUuC+fPdhSnPNVfy8RB3rDo4geneyEh7XpjLD7NiHrJAtFD2qNUmaaHe9gixIX 79/ztvkHsYNlFemgB79g7WIiBKxlsMr2K7lLD+lp7oeR2UA7Q3btM5kBfLw3spdG7E/c L4ERYBcnn/shw2DakCn8/Dr94Y2vhZKiy2tuvhmNyrKoJcm/HO4NGzeuXRDx0z0Ac1Ml mfbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=OawhDM8ZpV0RjPs6QqjlTWNfo7z6flHF8PYYLIyQhBU=; b=fxz1ls+1rNV2Kt78uzIiyROG3NrU1bC3BqofQHOWn7S2Jt+U6rMk6SJfwwymTsWIQV bT1HogxBiqYNkOrFaWQALAat0XIfG8JVQWFtIJIhF1c6JK0iefBFygu796OK3Bhn2lGq qzAn/ZWJ+kMsjlwgUWL9DHD3FNH9QbHCTDuEnsiqoE276TxVDnIojDXuFrTrx/X0L0NA E5BK1GNU7XeQPce4hcV4PO+5IAqwUGNSsTAnzTZtyoT9y0ltf9pok3HDik7e6Mqe8Uk7 8AudSsuSGUyuuN78T9VbDiTRJ7aDAyW0ZvGs0LZRoVjCyS8IU5Lzd1eqasGtIPhZPyLa A6Qg== X-Gm-Message-State: AOAM531PuyhFE+LLtDDFuj6RGBRkqsBACGv+w9lmAtQbqxAGk2MO3LiS SBWGV+o3LeHF2hz0HjYs13I= X-Google-Smtp-Source: ABdhPJwthSqDLc2yVwkUwn1vd6m3L0O4bHOthhrXQX310jPT7nQepjJF+t1Z9H6VG41lfhqJbF5RuQ== X-Received: by 2002:a17:906:3052:: with SMTP id d18mr191649ejd.530.1615416827897; Wed, 10 Mar 2021 14:53:47 -0800 (PST) Received: from xws.localdomain ([37.58.58.229]) by smtp.gmail.com with ESMTPSA id lu5sm377286ejb.97.2021.03.10.14.53.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Mar 2021 14:53:47 -0800 (PST) From: Maximilian Luz To: Jiri Kosina Cc: Maximilian Luz , Benjamin Tissoires , Hans de Goede , Mark Gross , =?utf-8?q?Bla=C5=BE_Hrastnik?= , linux-input@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] HID: Add support for Surface Aggregator Module HID transport Date: Wed, 10 Mar 2021 23:53:27 +0100 Message-Id: <20210310225329.2393372-1-luzmaximilian@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org This series adds support for the Surface System Aggregator Module (SSAM) HID transport subsystem. The SSAM is an embedded controller, found on 5th- and later generation Microsoft Surface devices. On some of these devices (specifically Surface Laptops 1, 2, and 3, as well as Surface Book 3), built-in input devices are connected via the SSAM. These devices communicate (mostly) via normal HID reports, so adding support for them is (mostly) just a matter of implementing an HID transport driver. SSAM actually has two different HID interfaces: One (legacy) interface used on Surface Laptops 1 and 2, and a newer interface for the rest. The newer interface allows for multiple HID devices to be addressed and is implemented in the first patch. The older interface only allows a single HID device to be connected and, furthermore, only allows a single output report, specifically one for the caps lock LED. This is implemented in the second patch. See the commit messages of the respective patches for more details. Regards, Max Note: This patch depends on the platform/surface: Add Surface Aggregator device registry series. More specifically patch platform/surface: Set up Surface Aggregator device registry The full series has been merged into the for-next branch of the platform-drivers-x86 tree [1]. The commit in question can be found at [2]. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=for-next [2]: https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/commit/?h=for-next&id=fc622b3d36e6d91330fb21506b9ad1e3206a4dde Maximilian Luz (2): HID: Add support for Surface Aggregator Module HID transport HID: surface-hid: Add support for legacy keyboard interface MAINTAINERS | 7 + drivers/hid/Kconfig | 2 + drivers/hid/Makefile | 2 + drivers/hid/surface-hid/Kconfig | 42 +++ drivers/hid/surface-hid/Makefile | 7 + drivers/hid/surface-hid/surface_hid.c | 253 +++++++++++++++++ drivers/hid/surface-hid/surface_hid_core.c | 272 +++++++++++++++++++ drivers/hid/surface-hid/surface_hid_core.h | 77 ++++++ drivers/hid/surface-hid/surface_kbd.c | 300 +++++++++++++++++++++ 9 files changed, 962 insertions(+) create mode 100644 drivers/hid/surface-hid/Kconfig create mode 100644 drivers/hid/surface-hid/Makefile create mode 100644 drivers/hid/surface-hid/surface_hid.c create mode 100644 drivers/hid/surface-hid/surface_hid_core.c create mode 100644 drivers/hid/surface-hid/surface_hid_core.h create mode 100644 drivers/hid/surface-hid/surface_kbd.c